Vacuum evaporating apparatus.



No. 755,529. PATBNTED MAR. 22, 1904.

G. ORDWAY.

VACUUM EVAPORATING APPARATUS.

APPLIOATIOH FILED 2115.17, 1905.

N0 MODEL.

'2 SHEETS-SHEET 1.

PATENTEDMAR. 22, 190 4. G. ORDWAY. v

VAGUUM EVAPORATING APPARATUS. APPLICATION FILED AUG. 17, 1903. no MODEL.

2 SHEETS-SHEET 2.

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Patented March 22, 1904..

ATnNT FFlCEt CHARLES ORDWAY, OF NEW YORK, N. Y.

VACUUM EVAPORATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 755,529, dated March 22, 1904.

Application filed August 17, 1903.

To whom it may concern.-

Be it known that I, CHARLES ORDWAY, a citizen of the United States, and a resident of the borough of Brooklyn, city of NewYork, county of Kings, and State of New York, have invented certain new and useful Improvements in Vacuum Evaporating Apparatus, of which the following is a specification,taken in connection with the accompanying drawings, which form a part of the same.

This invention relates to vacuum evaporating apparatus, such as described in my United States Letters Patent, No. 709,172, of September 16, 1902, and relates especially to an automatic level-gage for use in connection with the same.

parts in the several figures, Figure 1 is a vertical sectional View of an embodiment of my invention. Flg. 2 1s a horizontal sectional .view taken substantially on the line 2 2 of Fig. 1. Fig. 3 is a vertical section showing a'modified form of regulator. Fig. 4 is a horizontal section of the same, taken substantially on the line 4 4c of Fig. 3.

In the embodiment of this invention shown in the accompanying drawings an eflect of a vacuum evaporating apparatus is indicated in Fig. 1, this effect having the two sets of vertically arranged heating tubes 13 within the shells B B. These tubes are heated by steam supplied by the steam-inlet B the condensed water being discharged by the drip-pipe B*. The connections A A A,

and A connect these tubes to the liquor-chamber A and the vapor-chamber A, which are vertically arranged and connected by the vertical downtake O, the lower end C of this downtake entering the liquor-chamber, as indicated, in line with the vacuum-leg G, which allows the ready removal of crystallized material, such as salt, by means of the conveyer G. The downtake is preferably provided with the cooling-jacket D around the same, this jacket being supplied by cooling fluid, which may be the liquor fed to the effect by the feed-pipe D D the liquor after passing through the jacket entering the pipe D which supplies it to the liquor-chamber A. This Serial No. 169,687. (No model.)

effect is constructed and operates as is described more in detail in the patent referred to, the liquor being evaporated as it circulates through the submerged heating-tubes, the vapor passing off through the vapor-pipe F and the crystallized material being deposited by the action of the downtake and removed. A number of eflects of this character may be connected together in the ordinary manner to form a multiple-effect evaporating apparatus, as described in the patent referred to.

In order to automatically maintain the proper quantity of liquor within each effect, an automatic level-gage may be employed in connection therewith. Fig. 1 illustrates a gage of this character controlling the liquor flowing through the feed-pipe D to the effect. This automatic level-gage in the form indicated comprises a float-chamber E, within which the float E operates. This chamber is connected by the pipes E E with the vaporspace and liquor-space of the effect, so that the level of liquor in the float-chamber indicates the amount of liquor within the eflect. Furthermore, since there is no circulation of liquor in the float-chamber the level of liquor there in is not disturbed by the evaporation and rapid ver being within the float-chamber, as indicated. The cord or chain E is connected with the end of the lever and passes over the pulley E its other end being connected with the float E so that the movements of the valve E are controlled by the liquor-level in the chamber through the float. The pulley is mounted upon the rod E, passing through a suitable stuffing-box in the chamber and secured in position by the collar E The position of the pulley may be suitably adjusted by loosening the collar and moving the rod to the desired position, in which it may be secured by the collar in an obvious manner. Since the length of the cord remains the same, this operation adjusts the height of the float in the chamber, and thereby adjusts the liquor-level in the chamber at which the float is operated. This change automatically maintains a different amount of liquor in the eifect. If desired, the liquor-feed pipe may be pro Vided with the cut-01f valve D and a suitable by-pass D may also be provided around the automatic level-gage and cut-ofl, and this bypass may be formed with a valve D for the manual regulation of the liquor in the way desired. This gage controls the amount of liquor within the effect by stopping the feed of liquor thereto when the eflect contains the right amount of liquor for proper operation. The liquor-level within the float-chamber is under these conditions such as to raise the float E the weight of the valve-lever E thereupon operating to close the valve. Any diminution in the amount of liquor in the effect through evaporation or otherwise at once operates to lower the float, and thereby to open the feed-valve and allow sufficient additional liquor to enter the effect, so that the proper operating conditions are in this manner automatically maintained. Automatic level-gages of this character when connected to the feedpipes of each effect of a multiple-effect apparatus would of course automatically maintain the desired amount of liquor in each effeet of the series.

If desired, the regulator may be formed as indicated in Fig. 3, in which the lever E is shown connected in a similar manner to the valve E controlling the liquor-supply pipe. This lever is pivoted to the swiveled end H of the float-rod H so as to be connected with the float H operating in the chamber H and controlled in its vertical movements by the guides H. The float-rod is indicated as threaded and cooperates with a suitable threaded nut in the float. The upper end of this rod is preferably provided with the squared section H which fits loosely within the square socket I. This socket is connected with the handwheel J, so that it may be rotated from outside the chamber. The liquor-level within the chamber corresponds to the amount of liquor in the effect with which the chamber is connected by the pipes E E. This form of regulator operates in the same way to control the amount of the liquor in the submergedtube evaporating apparatus, the adjustment of the regulator being effected in this instance by rotating the hand-wheel J. This rotates the float-rod, the float being prevented from rotating by the guides H and through the screw connection between the float and rod secures a longitudinal adjustment of the float upon the rod H so that any desired amount of liquor may be maintained in the effect.

It is of course understood that many modifications may be made by those familiar with this art in the form, proportions, and numbers of parts of this apparatus. Furthermore, parts of the same may be employed in connection with other devices and parts may be omitted without departing from the spirit of this invention or losing the advantages of the same.

I do not, therefore, desire to be limited to the disclosure in this case; but

What I claim as new, and what I desire to secure by Letters Patent, is set forth in the appended claims:

1. In evaporating apparatus, an efiect, a float-chamber connected with the vapor-space and the liquor-space of said effect, a float in said chamber, a feed-pipe to supply liquor to said efiect, a valve in said pipe, a lever secured to said valve to control the same, a pulley within said chamber. a rod secured to said pulley extending through the wall of said chamber and adjustable with relation thereto, and a cord secured to said lever and said float and passing over said pulley.

2. In evaporating apparatus, an effect, a float-chamber connected to said efiect, a float in said chamber, a feed-pipe to supply liquor to said effect, a valve in said pipe, and means connecting said valve and float comprising adjusting means extending outside said chamber to regulate the amount of liquor in said efiect.

3. In evaporating apparatus, an efl'ect, a float-chamber connected to said effect and receiving liquor therefrom, a float in said chamber, a feed-pipe'to supply liquor to said effect, a valvein said pipe connected with said float to be operated thereby, acut-oif adjacent said valve and a valved by-pass in said feed-pipe around said cut-off and valve.

4. In evaporating apparatus, an effect having submerged heating-tubes, a chamber connected to said eifect to receive liquor therefrom, a feed-pipe to supply liquor to said effect, a-valve in said pipe, adjustable operating means in said chamber connected with said valve to be operated by the level of liquor in said chamber and to control the amount of liquor in said effect and means extending outside of said chamber to adjust said operating means.

5. In evaporating apparatus, an effect, a chamber connected to said efiect to receive liquor therefrom, a feed-pipe to supply liquor to said effect, a valve in said pipe, adjustable operating means in said chamber connected with said valve to be operated by the level of liquor in said chamber and to control the amount of liquor in said effect and means extending outside of said chamber to adjust said operating means.

6. In feeding apparatus, a liquor-pipe, a valve in said pipe, a float-chamber connected to said pipe'beyond said valve, a float in said chamber, a lever secured to said valve to control the same, a pulley within said chamber, a rod secured to said pulley extending through the wall of said chamber and adjustable with relation thereto and a cord secured to said lever and said float and passing over said pulley.

7. In feeding apparatus, a liquor-feed pipe, a valve in said pipe, a float-chamber connected to said pipe beyond said valve, a float in erated by the level of liquor and to control the IQ amount of liquor fed through said pipe, and means extending outside of said chamber to adjust said operating means.

CHARLES ORDWAY.

Witnesses:

HARRY L. DUNcAN, JEssIE B. KAY. 

